Question

Много баллов! С дано, системой си и формулами Напряжение на первичной обмотке понижающего трансформатора 220 В, мощность 44 Вт. Определите силу тока во вторичной обмотке, если отношения числа витков обмоток равно 5. Потерями энергии можно пренебречь

Answer 1

Ответ: 1А

Объяснение: Мощность первичной и вторичной обмоток трансформатора равна произведению силы тока на напряжение:

P=UI

Напряжение на вторичной обмотке равно: величине напряжение на первичной обмотке к коэффициенту трансформации:

V2=V1/k=220/5=44В

Мощность во вторичной обмотке будет равна тоже 44Вт. Тогда сила тока во вторичной обмотке равна:

I2=Р/V2=44/44=1А

Answer 2

Calculation of Current in the Secondary Coil of a Step-Down Transformer

To determine the current in the secondary coil of a step-down transformer, we can use the formula:

I2 = (I1 * N1) / N2

Where: - I2 is the current in the secondary coil - I1 is the current in the primary coil - N1 is the number of turns in the primary coil - N2 is the number of turns in the secondary coil

In this case, we are given that the voltage in the primary coil is 220 V and the power is 44 W. We are also given that the ratio of the number of turns in the primary coil to the number of turns in the secondary coil is 5. We can assume that there are no energy losses in the transformer, so we can neglect energy losses.

To find the current in the primary coil (I1), we can use the formula:

P = V * I

Where: - P is the power - V is the voltage - I is the current

Rearranging the formula, we can solve for I1:

I1 = P / V

Substituting the given values, we have:

I1 = 44 W / 220 V = 0.2 A

Now, we can substitute the values of I1, N1, and N2 into the formula to find I2:

I2 = (0.2 A * N1) / N2

Since we are not given the specific values of N1 and N2, we cannot calculate the exact value of I2. However, we can provide the formula for calculating I2 based on the given information.

Please note that the search results did not provide specific formulas or values for this particular question. Therefore, the calculation is based on general knowledge of transformers and electrical principles.